Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
If our community has helped you, please consider making a contribution to support this website. Thanks!

Fresh Air

Options
charliechicago
charliechicago Member Posts: 179
in THE MAIN WALL
I am installing a 45,000 BTU   %80 furnace in a small mechanical room in a finished attic and would like to bring in fresh air for combustion. Is there a calculation to find out what size pipe I need? Thanks, Mike

Comments

  • Tim McElwain
    Tim McElwain Member Posts: 4,657
    Do you have a copy

    of NFPA 54 National Fuel Gas Code? If so look in the "Air for Combustion" section. There should also be something in the I & O manual for the furnace.
This discussion has been closed.

Categories